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Polk Audio db691

6x9" 3-Way dB Series Marine Grade Coaxial Speakers

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List price $179.99

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$94.95

with warranty A Pair

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Arrives by Wednesday, Apr. 1 to zip 20147

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Bundled Savings with this Product

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Get 25% off Sound Dampening Speaker Kit with Purchase!

For a limited time, get 25% off of the NVX SDSK2 Speaker Kit with a qualifying pair of speakers! Sound dampening will eliminate rattles, insulate against heat, and also improve the sound and output of your speakers!

3.75

9126

100

Polk Audio db691

$94.95

+

25% OFF

NVX SDSK2

$14.99

Special Price $11.24 ($14.99 if purchased separately)

NVX SDSK2

• Eliminates Road Noise
• Quiets Vibrations
• Stops Annoying Rattles
• Increases SPL
• Reduces Heat
• Simple To Install
• Peel and Stick Installation
• Two 10" x 10" Pieces

(Offer 1 of 1)

Combined Total Price

$106.19

You Save $3.75

Exceptional Quality and Versatility

Step up your vehicles audio performance with Polk Audio's revolutionary db691's. Cutting edge technology has allowed for an efficient speaker that has ability to accurately reproduce music like you have never heard before. A precise balance of materials including the Silk/Polymer Dome tweeter and Mica Cone woofer enable smooth roll-off and quick response at any volume. The rubber surround adds to bass response as well as increases the lifetime of the speaker under any conditions. Being marine certified, the Polk db691's will surprise you with its versatility and ability for use in many applications. The high-efficiency loudspeaker means less power is necessary for the same quality output. The revamped db Series delivers that perfect Polk Audio performance and durability like never before.

Speaker Features:

  • 6" x 9" 3-way Speakers (Marine Certified)
  • Power Handling:
    • Peak: 600 watts per pair / 300 watts each
    • RMS: 200 watts per pair / 100 watts each
  • Impedance: 4 ohms
  • Dynamic Balance polymer/mica composite mineral filled cone is stiff yet lightweight for big sound and little distortion
  • 19mm liquid-cooled silk/polymer composite dome tweeter with neodymium magnet for clear and detailed highs
  • Low-mass 2-Layer 25mm Kapton voice coil former is lightweight for high sound output
  • Multi-hole mounting pattern and shallow depth for easy drop-in installations in most cars
  • ABS Grilles, computer optimized and based on exclusive MOMO designs
  • Durable butyl rubber surround won’t fall apart under the stress of extreme temperatures, sunlight or time
  • Pole Plate Heat Sink promotes better heat dissipation for superior power handling and reliability
  • Acoustically inert stamped steel basket
  • Flat Spider for faster, longer excursion linear motion
  • Flexible woven tinsel leads sewn directly into Spider for greater reliability
  • Frequency Response: 35-22,000 Hz
  • 1-year SonicElectronix.com warranty

Priced Per Pair

Product History:

Polk Audio db691 thumbnail
(newest, current model)
Polk Audio db690 thumbnail
(previous model, replaced by Polk Audio db691)

Speaker Specifications

Series
This is the manufacturer product line of speakers.
db (Polk)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Pair
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
6" x 9"
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
3-way
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Dome
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Silk-Polymer Composite
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Polymer/Mica Composite
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Butyl Rubber
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
300 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
100 watts
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
 
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
93 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
35 - 22000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

No
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
3-3/16"
Bottom-Mount Depth
The depth when installed from the bottom of the mounting surface. Measured from the bottom of the speaker's magnet to the top of the mounting holes on the rim of the speaker.
3-3/4"
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches or millimeters, required to contain the speaker.
8-1/2 x 5-3/4 
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Yes

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
67%
4 Star
28%
3 Star
3%
2 Star
2%
1 Star
0%

Average Attribution Rating

Durability
4.6
Value
4.7
Features
4.5
Design
4.5
Usability
4.8
wes

OK

Overall
Durability
Value
Features
Design
Usability
GOOD QUALITY

October 31, 2010

Great sound all around, able to handle the power, I would recommend

15 of 24 found this helpful

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Jack

Southwest florida

Overall
Durability
Value
Features
Design
Usability
Polk db 5.25" component speakers

August 31, 2009

These speakers have really clear sound quality and some pretty decent bass for component speakers. The only problem i had with them was the durability, the soldering that wired the diode to the positive connector was a little weak and broke on two of four of these speakers. But i should also mention that i was pretty rough on these when i first got them. But all four of them are holding up and kickin great after 6 months so far. And after these speakers i've sworn by polk audio ever since in the rest of my car audio purchases

17 of 28 found this helpful

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Luke

Texas

Overall
Durability
Value
Features
Design
Usability
Best deal out there

March 5, 2012

I make a lot of ice chest radios. I have tried almost every marine speaker out there. These by far have the most bass and sound the best. I have to add extra latches to the lids to keep them from rattling.

14 of 25 found this helpful

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big dwayne

nokesville

Overall
Durability
Value
Features
Design
Usability
Polk Audio db691

June 14, 2009

These speakers are the best for the money in my opinion, i would deffentaly recommend these to anyone. I have had these for six months in my daily driver and i push them hard everyday and have not had any problems.

14 of 25 found this helpful

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Sam

Pittsburg ca

Overall
Durability
Value
Features
Design
Usability
Sam.

August 17, 2014

Well heard lots of good review on this Polk 6x9 n after a month one blew up...not good ..

10 of 18 found this helpful

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Donald

Marrero, LA

Overall
Durability
Value
Features
Design
Usability
Superior Sound Quality

January 6, 2014

I have finished installing a complete set of Polk speakers in my Town & Country van. (2) db691's in the back, (2) db691's in the doors, and (2) db521's in the dash. The sound is like a "Concert Hall" with the rich bass from the 691's, and the clarity and highs from the 521's. This is still coming from the standard "Head / Stereo" unit from the Town & Country. I have had several vehicles with "Premium" sound systems - but have not heard this kind of clear deep sound from any of them.
These speakers are the "BEST" value for the price.

9 of 16 found this helpful

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TeamATOMiK.com

Seattle, WA

Overall
Durability
Value
Features
Design
Usability
Polk Audio All The Way!

February 1, 2009

If you are looking for the biggest, clearest, HiFi bang for your buck, you have to go for Polk Audio. I have db5251's (also available from SonicElectronics.com) in my front doors, the db691's in the rear deck, and a Polk db1222 subwoofer enclosure in the truck. I'm pushing 1600 watts RMS (100 watts into each db691) and the sound is amazing! Perfectly clear, excellent reproduction and imaging, outstanding HD HiFi that only Polk can produce for such a low price$.

15 of 28 found this helpful

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DLB

Marrero, La.

Overall
Durability
Value
Features
Design
Usability
Premium Sound

September 23, 2013

I replaced the stock speakers in my Town & Country Van - and find these to be exceptional. The sound is superb, from the originals.

I would reccomend these speakers for anyone looking for "Premium Sound" from their vehicles.

6 of 11 found this helpful

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Faruk

Mozambique

Overall
Durability
Value
Features
Design
Usability
Great Speakers.

August 29, 2013

I love this speakers they are playing together with a pair of Alpine SPR-69, they sound great, no problems with the combo. Bought those instead of a another pair of Alpines because they seem to have more bang for the money, but those sensitivity ratings are questionable the catalog only states 93db not db/m, so you never now what they really are.

7 of 13 found this helpful

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jacob

sacramento, CA

Overall
Durability
Value
Features
Design
Usability
Great speakers

February 28, 2013

Tweeters seem to be the hardest sound to find for me in a speaker, the tweeters in these speakers are awesome, I bought these because soft dome tweeters are my favorite and I have liked them the most. The speakers are very very loud and can handle some watts.

I had the Pioneer 5 ways 6x9s, and these are killing them no comparision, IMO. If you want loud speakers, that are crisp, with great highs, these are them

3 of 5 found this helpful

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P1nball

Fort Mill South Carolina

Overall
Durability
Value
Features
Design
Usability
Polk Audio db691

November 27, 2012

Excellent Speakers. They replaced the really old and very cheap factory units that were in my 1999 Mercury Villager Van. Don't laugh!! It is really a great small Mini Van. The sound and quality of there speakers are Excellent. I have owned a pair of them in a prior vehicle
and were very happy with the sound. You can really crank them up with NO distortion or that muddle sound in very low bass. Mid tone is very good the tweeters are Good not great. I do prefer SEPARATE Tweeters for that clear as a bell sound that gives you that dimension of space in the car.

4 of 7 found this helpful

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Barry

Saint Johns, MI

Overall
Durability
Value
Features
Design
Usability
Great Speakers for the price.

August 15, 2012

I am huge Polk Audio fan to begin with, so my selection of Polk’s db691 for my car stereo upgrade was easy. They are clear, powerful and take the power without complaint. They were exact drop-in replacements for the rear deck of my 2000 Bonneville. With just a bit of research I was able to remove the rear seat and deck and install these in about two hours. I do think the sharp angle of my rear window does not aid in the transmission of the nice clean sound, but that is a GM, not Polk design "feature". My only suggestion for the folks at Polk Audio would be to include stake-on connectors with the speakers. The positive and negative are different sizes and a bit fragile. Having the exact match would reduce the likelihood of bending the terminals.

As always Sonic's price and service was top notch!

4 of 7 found this helpful

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Steven

Garland, TX

Overall
Durability
Value
Features
Design
Usability
Excellent speakers for the price!

July 19, 2012

I bought these to pair up with the DB651's powered by an okay hand-me-down amp someone gave me that was, unfortunately, under-powering them. It wasn't until I hooked them up to a more appropriate powered Alpine amp powering them a lot closer to their RMS ratings that I was able to effectively break them in. For the most part, these speakers are definitely on the 'brighter' side. The highs turned out great, mids are good, however even under amplification there isn't too much mid bass happening with this series. But, pair them with a good sub and you'll have that gap remedied. All in all I'd say these are a great bang for your buck!

4 of 7 found this helpful

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Jonah

Terrell, TX

Overall
Durability
Value
Features
Design
Usability
Fantastic Speakers!

November 26, 2011

I bought these speakers to replace the factory front speakers in my 2003 Ram 1500. They sound great and are a huge improvement over the factory setup. (Note to Ram owners: these speakers are too deep to mount as is and will hit the window when it is rolled down, to fix this I used the grill spacer that comes with the speaker and put it on the back before screwing them in). I originally ran them off of head unit power but recently bought an amp (R400-4D) and it made a world of difference. The speakers sounded good off of head unit power alone but the addition of an amp really livened them up and increased bass response. Honestly my only complaint about these speakers is that they're a little too sharp on extremely high pitched sounds (think higher pitched cymbals, and the hissing "s" sound made when singing into a mic) and the speaker wire connections seem a little flimsy. Otherwise these speakers sound great and I highly recommend them.

4 of 7 found this helpful

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Joshua

Martinsburg, WV

Overall
Durability
Value
Features
Design
Usability
Great speakers for the money

June 11, 2010

These speakers go great with my db6501's! Easy installation, great sound. It is exactly what I have come to expect from Polk! I highly recommend them

4 of 7 found this helpful

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Hank

Roswell, GA

Overall
Durability
Value
Features
Design
Usability
Polk Audio db691

May 11, 2010

As of right now the 691's are the base and bass of my system. I have an MTX 704x giving them 70 watts of continuous power which to me is plenty. I've barely gone over halfway on the gain and they are more than loud enough. I'm getting a sub in a week which well help develop the low end because as of now I use a hpf on them so they don't bottom out. They're plenty enough though to keep the music playing loud especially if what you listen to is mostly rock, i can finish a song with them and have my ears ringing. They don't handle the deep end notes of rap music amazingly but what can you expect from a pair of speakers. Overall i've been very impressed with them.

4 of 7 found this helpful

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Teeman

Tacoma,WA

Overall
Durability
Value
Features
Design
Usability
Polk Audio db691

June 25, 2009

I installed the db691 in my motorcycle saddlebags an i'm pushing them with a hawg-wired 1502 amp with 75 watts rms each side. The speakers bump pretty good and i'm very satified

11 of 21 found this helpful

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michael

Tamaqua, PA

Overall
Durability
Value
Features
Design
Usability

April 30, 2008

i paired these with the db521's in the doors, these in the deck running off of an older orion amp, and two orion 2NT Ntense 10 inch woofers, they sound fantastic, no flaws, they handle power well and put out crisp vocals, great buy from sonic!!

4 of 7 found this helpful

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James

Birmingham, AL

Overall
Durability
Value
Features
Design
Usability
Speakin' loud...

August 9, 2007

Wow these speakers really speak-out-loud. The highs let you hear everything and the sound is just awesome. Believe me, you won't miss a note. Also the look of them are very eye catching.

4 of 7 found this helpful

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steve

mesa az

Overall
Durability
Value
Features
Design
Usability
durable marine speakers

June 27, 2014

The polk db691's I have put to the test well my son did I had just got back from my first trip from rebuilding my bass boat and my 2 year old son was helping be clean the boat off well he kept putting the hose directly on the speakers and drowning them with water I was worried they might not work after they dry out but they held up great and sound like new still very happy with them and they sound very clear great quality speakers

9 of 18 found this helpful

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Accessory Tools and Products

Accessories added

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $44.95

Belva 23 ft. of True Spec 12 Gauge Speaker Wire

100% Copper Clad Aluminum, high strand count with ultra-flexible PVC blended jacket for easy installation

Your Price $9.99

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $6.99

12-10 AWG Yellow T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $4.49

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $6.99

NVX SDSK2 Speaker Kit

Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!

Your Price $14.99

Dynamat Xtreme Speaker Kit 10415

Enough sound dampening for 2 speakers!

Your Price $17.95

Stinger Roadkill Speaker Kit

Use this to eliminate rattle from your speakers!

Your Price $13.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $6.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

Xscorpion WDCR2 Window and Door Clip Remover

Removes and installs handle and window crank clips.

Your Price $6.99

NVX SDRLR1 Sound Dampening Rubber Roller

Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!

Your Price $7.99

Xscorpion USP-69 6" x 9" Speaker Baffles

Enhance the sound of your speakers with these easy to install speaker baffles.

Your Price $5.99

Browse 3 questions and 12 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
Strong reviews and low price
Wayne B on Dec 13, 2014
I was looking for speakers to install in the lids of my Harley bags. I hope they fit.
Aaron S on Sep 17, 2014
its amazing
kim r on Nov 5, 2014
I purchased the db501 5 inch speakers 2 years ago, and they are great solid speakers. Very clear with more bass than I have heard in any 5 inch speaker. I can only imagine how the 6x9s will sound. Polk makes quality speakers.
Eldrick L on Sep 11, 2014
What amp would work best with these?
Kyle K on Dec 5, 2014
Best Answer: Do you have another pair of speakers you want to run off the amp, or just these? If it is just these, look for a two channel amp with specs of 100 watts RMS at 4 ohms. If you are looking to get another pair of speakers, look for speakers with the same specs as these, and get a four channel amp.
Reply · Report · Chris A on Dec 5, 2014
· Add Answer · I Have This Question Too (0)
Will these fit in the front doors of a 2011 Nissan Sentra? I know the spec's call for 6x9's but I do not know the depth tolerance.
john D on Nov 30, 2014
Best Answer: Hello John,

Unfortunately, the db691 will not fit the fronts' depth. The door has roughly 2.25"-2.5" of usable space. The most common solution, is to go with 6.5" Shallow Speakers for the front, utilizing the Scosche SA69 to fill in the space. The matching db Series is the Polk Audio db651s [2" Depth].
Scosche SA69
Scosche SA69
Polk Audio db651s
Polk Audio db651s
Reply · Report · Customer SStaff on Nov 30, 2014
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

db691

UPC

747192112790

Weight

10.00lbs

Internal SKU

db691

Internal Product ID

9126

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Polk Audio db691

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